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PP1-02

Fertility time trends in dairy herds in the central area of Portugal

J. Carvalheira1,2, A. Martins3, A. Ferreira3, A. Rocha4
1ICETA-CIBIO-Porto University, Population Studies, Vairao, Portugal
2ICBAS-University of Porto, Porto, Portugal
3ABLN, Vila do Conde, Portugal
4CECA-University of Porto, VairĂ£o, Portugal

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